Carl Edward Sagan was an astronomer, astrophysicist, author, cosmologist, and highly successful popularizer of astronomy, astrophysics and other natural sciences. Carl Sagan was a Professor of Astronomy and Space Science and Director of the Laboratory for Planetary Studies at Cornell University, but most of us know Carl Edward Saganfor his popular science books and for the award-winning 1980 television series Cosmos: A Personal Voyage, which he narrated and co-wrote, and for the related book he wrote.

Carl Sagan Day is celebrated on November 9th. As reported on http://centerforinquiry.net/carlsaganday (which you are invited to visit for further information):

The Center for Inquiry and especially our sister organization, the Committee for Skeptical Inquiry, had the honor of working with Dr. Sagan for twenty years, from 1976, when he was one of the founding members of CSI (then known as CSICOP), to 1996, when he published the last of his many articles in Skeptical Inquirer, just months before he died.

Last year, CFI Ft. Lauderdale, FLASH and other groups created the first Carl Sagan Day celebration for his birthday, November 9th, and the idea quickly spread around the world. Now groups from Australia to Alaska are planning star parties, astronomy lectures, science fairs, teacher workshops and more to say thanks to Dr. Sagan and bring his work to the next generation of “star stuff.”